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"Please enter a different email address": blocked domains in forms

A rejected email is usually the Block free email providers option, or a disposable domain HubSpot always blocks.

Subscription
Marketing Hub or Content Hub Starter and up to block domains
Permissions
Edit forms permission
Time
3 min · Beginner
Last verified

Short answer

HubSpot's KB: turning on Block free email providers rejects addresses from free email domains on its published list. Some disposable email domains are blocked regardless of that checkbox. The list can be downloaded as a CSV, edited, and pasted into the blocked domains field.

1. Account-wide blocking

Form submission settings in my demo portal.

Forms Submissions Settings with spam switches and Block email domains across all forms
Excluded IP spam (1), gibberish detection (2), and blocked domains (3).

2. Real people rejected

If customers use free email, turn the option off for that form.

3. Related

Form spam settings.

Sources

New field notes by email

One email when a new article publishes.

Still stuck?

If this did not fix it, the problem is probably specific to your setup. Book a call and we will look at it together.

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